function handleFileSelect(evt)
	 {
		var files = evt.target.files; // FileList object
	    
		// Loop through the FileList and render image files as thumbnails.
		for (var i = 0, f; f = files[i]; i++)
		{   
			// Only process image files.
			if (!f.type.match('image.*'))
			{
			  continue;
			}
		  var reader = new FileReader();
	    
		  // Closure to capture the file information.
		  reader.onload =
		  (function(theFile)
			{
				return function(e)
				{
					// Render thumbnail.
					im.src = e.target.result;
				};
			})(f);
	    
		  // Read in the image file as a data URL.
		  reader.readAsDataURL(f);
		}
	}
